Corneal wavefront aberrations and subjective quality of vision after small incision lenticule extraction

Schmelter, Valerie; Schworm, Benedikt; Mayer, Wolfgang J.; Priglinger, Siegfried; Dirisamer, Martin; Luft, Nikolaus

doi:10.1111/aos.14420

Cited by 25 publications

(21 citation statements)

References 28 publications

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“…The HOAs illustrated by corneal refractive surgery are predominantly SA and coma (20)(21)(22). In addition, the relationship between patient-reported symptoms and HOAs has been investigated in patients after refractive surgery (7,9,10,23,24). However, only very weak correlations and clinically irrelevant associations between visual symptom scores and corneal HOAs have been found (9,10).…”

Section: Discussionmentioning

confidence: 99%

“…In addition, the relationship between patient-reported symptoms and HOAs has been investigated in patients after refractive surgery (7,9,10,23,24). However, only very weak correlations and clinically irrelevant associations between visual symptom scores and corneal HOAs have been found (9,10). To date, little is known about the connection between the preoperative SA and disk halo size.…”

Section: Discussionmentioning

confidence: 99%

“…Several studies based on subjective questionnaires have investigated the relationship between patient-reported symptoms and higher-order aberrations (HOAs) and showed that HOAs might be correlated with visual symptom scores (index for the severity of symptoms obtained from the questionnaire) in patients after laser in situ keratomileusis (7,8). Accumulating evidence has revealed that HOAs and glare are relevant (9,10). Visual symptoms, such as glare source-induced halo, have been measured quantitatively using a vision monitor device, and the halo size has been established in a normal, non-clinical population (11).…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of Disk Halo Size and Identification of Correlated Factors in Myopic Adults

Zhao

Han

et al. 2022

Front. Med.

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This study aimed to evaluate glare source-induced disk halo size and assess its correlation with higher-order aberrations (HOAs), pupillometry findings, and contrast sensitivity in myopic adults (aged 23.8 ± 4.4 years). In this cross-sectional study, 150 eyes of 150 patients were assessed. All patients underwent routine ophthalmic examinations, wavefront aberrometry, halo size measurement, dynamic pupillometry, and contrast sensitivity tests. Spearman's correlation analysis and independent sample t-tests were performed for data analysis. The mean halo radius was 82.5 ± 21.8 and 236.7 ± 52.2 arc min at 5 and 1 cd/m2 luminance levels, respectively. The values were inversely correlated with internal spherical aberration (SA) (r = −0.175, p = 0.032 and r = −0.241, p = 0.003, respectively), but not correlated with spherical equivalent (SE, both p > 0.05). Positive correlations were observed between halo radius and pupil size, contraction amplitude, and dilation speed during pupillary light reflex. Halo radii at 5 and 1 cd/m2 luminance levels were not significantly correlated with the area under the log contrast sensitivity function (r = −0.093, p = 0.258 and r = −0.149, p = 0.069, respectively). The mean halo radius was not clinically different between myopic and healthy eyes at 5 cd/m2 luminance level and did not differ significantly between the high and low-to-moderate myopia at 5 and 1 cd/m2 luminance levels (all p > 0.05). According to a stepwise linear regression model, the internal SA had a negative effect on the halo radius under low photpic condition; the average pupil diameter, internal SA and corneal HOAs played a large role in determining the halo radius under mesopic condition.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Evaluation of Disk Halo Size and Identification of Correlated Factors in Myopic Adults

Zhao

Han

et al. 2022

Front. Med.

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“…Laser epithelial keratomileusis (LASEK) mainly utilizes an excimer laser to correct myopia. Both procedures are safe and effective [ 4 , 5 ].…”

Section: Introductionmentioning

confidence: 99%

Comparison of Corneal Densitometry and Visual Quality after Small Incision Lenticule Extraction (SMILE) and Laser Epithelial Keratomileusis (LASEK): One‐Year Comparative Study

Cai

Liu

et al. 2023

BioMed Research International

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Purpose. To investigate changes in corneal densitometry (CD) and visual quality following small incision lenticule extraction (SMILE) and laser epithelial keratomileusis (LASEK) in patients with mild-to-moderate myopia. Methods. A retrospective analysis was performed on 24 and 25 patients (46 eyes each) who underwent SMILE and LASEK, respectively, for mild-to-moderate myopia. The visual quality and CD values were recorded. Using the Pentacam Scheimpflug system, CD values were collected in three concentric optical zones at the depths of the anterior, central, and posterior layers. Efficacy, safety, predictability, corneal wavefront aberrations, and QoV scores were measured to evaluate visual quality. A correlation analysis was performed between changes in CD and clinical characteristics. Results. There were no statistical differences in efficacy and safety indices between the two groups. At 3 months postoperatively, a pronounced reduction in several zones was observed in the LASEK group ( p < 0.05 ), whereas no obvious change was observed in the SMILE group. There were obvious changes in the CD values in several zones in the SMILE and LASEK groups ( p < 0.05 ) after 1 year. The magnitude of the CD changes in the anterior and central corneal layers was smaller in the SMILE group than in the LASEK group (all p < 0.05 ). Lower HOAs, spherical aberration, and horizontal comas of the anterior and whole corneal surfaces were observed in the SMILE group. QoV scores were similar between the two groups. Conclusion. CD decreased in the SMILE and LASEK groups after 1 year; there was a smaller reduction in SMILE than in LASEK. SMILE and LASEK did not differ significantly in terms of safety and effectiveness in correcting mild-to-moderate myopia.

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“…At present, the evaluation indexes of the postoperative visual quality of SMILE can be divided into subjective indexes and objective indexes. The subjective evaluation indexes mainly include visual acuity (VA) and the subjective visual quality questionnaire [4]. Objective evaluation methods can be roughly divided into two types: wavefront aberrometers with different principles and a two-channel objective visual quality analysis system (OQAS2) [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Comparison of Early Visual Quality in Patients using Different Optical Zones Based on Dark Pupil Diameters in Small Incision Lenticule Extraction (SMILE)

Jiao

Zhong

Liu

et al. 2021

Preprint

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AIM: The early visual qualities of patients were evaluated after small incision lenticule extraction (SMILE) using different optical zones based on dark pupil diameters.METHODS: A case-control study was conducted to include 49 myopic patients (96 eyes) who underwent SMILE surgery. Patients were divided into three groups according to the difference between the diameter of the optical zone and the diameter of the dark pupil: Group A (<0 mm, N=30), Group B (0-1 mm, N=36), and Group C (>1 mm, N=30). In all groups, the dark pupil diameter was measured preoperatively. Subjective visual quality, uncorrected vision acuity (UCVA), spherical equivalent (SE), modulation transfer function cut-off frequency (MTFcutoff), objective scattering index (OSI), simulated contrast visual acuity (VA100%, VA20%, VA9%), total corneal higher-order aberration (tot-HOA), corneal spherical aberration (totZ40) and corneal coma (tot-coma) were measured preoperatively and 3 months postoperatively. P< 0.05 was considered statistically significant.RESULTS: There were no statistically significant differences in age, sex, UCVA, SE, corneal higher-order aberration, OQAS or subjective visual quality among the three groups before surgery (P>0.05). At 3 months postoperatively, there was no significant difference in UCVA, SE, MTFcutoff, OSI, VA100%, VA20%, or VA9% among the three groups (P>0.05). However, the tot-HOA, totZ40 and tot-coma indexes and the changes in corneal higher-order aberrations (Dtot-HOA, DtotZ40, Dtot-coma) at 3 months postoperatively were as follows: Group A > Group B > Group C (P<0.05). At 3 months postoperatively, the difference in subjective visual quality between the three groups was statistically significant (P<0.05). The difference in the amount of change in subjective visual quality between Groups A and C was statistically significant (P<0.05).CONCLUSION: Although the difference between the diameter of the optical zone and the diameter of the dark pupil does not affect the VA or the same diopter of patients after SMILE myopia correction, the optical zone diameter should be greater than the dark pupil diameter as far as possible in the design of SMILE surgery, in order to improve the objective visual quality and subjective satisfaction of patients after surgery.

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Corneal wavefront aberrations and subjective quality of vision after small incision lenticule extraction

Cited by 25 publications

References 28 publications

Evaluation of Disk Halo Size and Identification of Correlated Factors in Myopic Adults

Evaluation of Disk Halo Size and Identification of Correlated Factors in Myopic Adults

Comparison of Corneal Densitometry and Visual Quality after Small Incision Lenticule Extraction (SMILE) and Laser Epithelial Keratomileusis (LASEK): One‐Year Comparative Study

Comparison of Early Visual Quality in Patients using Different Optical Zones Based on Dark Pupil Diameters in Small Incision Lenticule Extraction (SMILE)

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